KR100639552B1 - Resin Composition for Core-sheath Composite Spun Fiber - Google Patents
Resin Composition for Core-sheath Composite Spun Fiber Download PDFInfo
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- KR100639552B1 KR100639552B1 KR1020050116796A KR20050116796A KR100639552B1 KR 100639552 B1 KR100639552 B1 KR 100639552B1 KR 1020050116796 A KR1020050116796 A KR 1020050116796A KR 20050116796 A KR20050116796 A KR 20050116796A KR 100639552 B1 KR100639552 B1 KR 100639552B1
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
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Abstract
본 발명은 코어-시스형(core-sheath type) 복합방사 섬유용 수지조성물 및 이로부터 제조된 단섬유 부직포에 관한 것이다. 보다 상세하게는, 본 발명에 의한 코어-시스형 복합방사 섬유용 수지조성물에서 코어(core)는 폴리에틸렌테레프탈레이트로 구성되고 시스(sheath)는 (a) 고밀도 폴리에틸렌 및 (b) 상기 (a)를 사용하여 제조된 변성 폴리에틸렌으로 구성됨으로써, 우수한 방사성을 유지하면서 강도가 우수한 부직포를 제조할 수 있다. The present invention relates to a resin composition for core-sheath type composite spun fiber and a short fiber nonwoven fabric prepared therefrom. More specifically, in the resin composition for the core-sheath composite spun fiber according to the present invention, the core is composed of polyethylene terephthalate and the sheath is (a) high density polyethylene and (b) the (a) By using the modified polyethylene produced using, it is possible to produce a nonwoven fabric having excellent strength while maintaining excellent spinning properties.
Description
본 발명은 코어-시스형(core-sheath type) 복합방사 섬유용 수지조성물 및 이로부터 제조된 단섬유 부직포에 관한 것이다. 보다 상세하게는, 본 발명에 의한 코어-시스형 복합방사 섬유용 수지조성물에서 코어(core)는 폴리에틸렌테레프탈레이트로 구성되고 시스(sheath)는 (a) 고밀도 폴리에틸렌 및 (b) 상기 (a)를 사용하여 제조된 변성 폴리에틸렌으로 구성됨으로써, 우수한 방사성을 유지하면서 강도가 우수한 부직포를 제조할 수 있다. The present invention relates to a resin composition for core-sheath type composite spun fiber and a short fiber nonwoven fabric prepared therefrom. More specifically, in the resin composition for the core-sheath composite spun fiber according to the present invention, the core is composed of polyethylene terephthalate and the sheath is (a) high density polyethylene and (b) the (a) By using the modified polyethylene produced using, it is possible to produce a nonwoven fabric having excellent strength while maintaining excellent spinning properties.
폴리에틸렌(시스)/폴리에틸렌테레프탈레이트(코어) 복합방사 단섬유의 경우는 기존의 폴리에틸렌테레프탈레이트 섬유에 비해 낮은 부직포 성형온도, 부드러운 감촉 등으로 기저귀, 위생자재 등에 다양하게 사용되면서 기존 부직포 시장에서 적용 영역을 급속히 넓혀 가고 있다. 그러나, 상기 복합방사 단섬유는 폴리에틸렌과 폴리에틸렌테레프탈레이트 사이에 상용성이 없는 관계로 계면에서의 분리가 발생하고, 이로 인해 섬유의 강도가 떨어져 결과적으로 부직포 제조시 강도 저하 등의 성형 불량을 초래하는 경우가 발생한다.Polyethylene (cis) / polyethylene terephthalate (core) composite spun short fibers are used in diapers and sanitary materials due to their low nonwoven fabric forming temperature and soft touch, compared to conventional polyethylene terephthalate fibers, and thus are applicable to the existing nonwovens market. Is expanding rapidly. However, since the composite spun short fibers have no compatibility between polyethylene and polyethylene terephthalate, separation occurs at the interface, and as a result, the strength of the fibers is reduced, resulting in molding defects such as a decrease in strength when manufacturing nonwoven fabrics. The case occurs.
이에, 상기의 단점을 개선하기 위한 복합방사 단섬유 부직포용 폴리에틸렌 수지에 대한 연구가 진행되었다. 구체적으로, 미국특허출원 제 5,372,885호에는 열가소성 복합섬유로서 코어는 폴리에틸렌테레프탈레이트 또는 폴리부틸렌 테레프탈레이트를 사용하고, 시스는 무수화합물을 0.1~1wt%를 갖는 변성 폴리에틸렌 수지를 2~15wt%를 첨가한 폴리올레핀계 수지를 사용하여 염색성이 우수한 복합방사 섬유를 제조하는 방법이 기재되어 있다. 그러나, 상기 방법은 염색성을 높이기 위해 첨가되는 변성 폴리에틸렌 수지의 함량이 높을 경우, 변성 폴리에틸렌 수지 제조시 생성되는 겔 성분으로 인해 방사성이 떨어지는 문제점이 있다. 또 다른 예로, 미국특허출원 제 5,948,529호에는 열가소성 복합섬유로서 코어는 폴리에틸렌테레프탈레이트와 극성기를 갖는 에틸렌 공중합체의 배합으로 이뤄지고, 시스는 폴리에틸렌 수지를 사용하여 높은 계면접착력을 갖는 복합방사 섬유가 기재되어 있다. 그러나, 상기 섬유는 코어성분의 흐름성 차이로 인해 방사성이 떨어지는 단점이 있다. Thus, the study on the polyethylene resin for composite spun short fiber nonwoven fabric to improve the above disadvantages. Specifically, US Patent Application No. 5,372,885 uses a polyethylene terephthalate or a polybutylene terephthalate as a thermoplastic composite fiber, and the sheath adds 2 to 15 wt% of a modified polyethylene resin having 0.1 to 1 wt% of anhydrous compound. A method for producing a composite spun fiber having excellent dyeability using a polyolefin resin is described. However, when the content of the modified polyethylene resin is added to increase the dyeability, the method has a problem of poor radioactivity due to the gel component produced during the production of the modified polyethylene resin. As another example, U.S. Patent Application No. 5,948,529 describes a thermoplastic composite fiber in which the core is composed of polyethylene terephthalate and an ethylene copolymer having a polar group, and the sheath is a composite spinning fiber having a high interfacial adhesion force using a polyethylene resin. have. However, the fiber has a disadvantage in that the spinning is poor due to the flowability of the core component.
이에, 본 발명자들은 우수한 방사성을 유지하면서 폴리에틸렌과 폴리에틸렌테레프탈레이트 수지의 상용성 문제를 해결하여 강도가 개선되는 복합방사 섬유용 수지조성물에 대해 연구하였다. 그 결과, 코어-시스형 복합방사 섬유용 수지조성물에 있어서 시스성분을 고밀도 폴리에틸렌과 이를 사용하여 제조된 변성 폴리에틸렌으로 구성함으로써 우수한 방사성을 유지하면서 폴리에틸렌과 폴리에틸렌테레프탈레이트 사이의 상용성 문제를 해결하여 강도가 우수한 부직포를 제조할 수 있음을 확인하고 본 발명을 완성하였다. Thus, the present inventors have studied a resin composition for composite spun fiber to improve the strength by solving the compatibility problem of polyethylene and polyethylene terephthalate resin while maintaining excellent radioactivity. As a result, in the resin composition for the core-sheath type composite spun fiber, the sheath component is composed of high density polyethylene and modified polyethylene produced using the same, thereby solving the problem of compatibility between polyethylene and polyethylene terephthalate while maintaining excellent radioactivity. It was confirmed that the excellent nonwoven fabric can be completed the present invention.
따라서, 본 발명의 목적은 우수한 방사성을 유지하면서 강도가 우수한 부직포를 제조할 수 있는 코어-시스형 복합방사 섬유용 수지조성물을 제공하는 것이다. Accordingly, it is an object of the present invention to provide a resin composition for a core-sheath type composite spun fiber that can produce a nonwoven fabric having excellent strength while maintaining excellent spinning properties.
또한, 본 발명의 다른 목적은 상기 수지조성물을 복합방사하여 얻은 부직포용 복합방사 섬유를 제공하는 것이다. In addition, another object of the present invention is to provide a composite spun fiber for nonwoven fabric obtained by the composite spun the resin composition.
또한, 본 발명의 다른 목적은 상기 복합방사 섬유로 제조된 부직포를 제공하는 것이다. Another object of the present invention is to provide a nonwoven fabric made of the composite spun fiber.
상기와 같은 목적을 달성하기 위하여, 본 발명의 코어-시스형 복합방사 섬유용 수지조성물에서 코어(core)는 폴리에틸렌테레프탈레이트로 구성되고 시스(sheath)는 (a) 고밀도 폴리에틸렌 및 (b) 상기 (a)를 사용하여 제조된 변성 폴리에틸렌으로 구성된 것을 특징으로 한다. In order to achieve the above object, in the resin composition for the core-sheath composite spun fiber of the present invention, the core is composed of polyethylene terephthalate and the sheath is (a) high density polyethylene and (b) the ( It is characterized by consisting of a modified polyethylene prepared using a).
이하, 본 발명을 보다 상세히 설명한다. Hereinafter, the present invention will be described in more detail.
본 발명에 의한 복합방사 섬유용 수지조성물에서 코어(core) 성분은 폴리에틸렌테레프탈레이트로 구성된다. In the resin composition for composite spun fiber according to the present invention, the core component is composed of polyethylene terephthalate.
또한, 본 발명에 의한 복합방사 섬유용 수지조성물에서 시스(sheath)는 (a) 고밀도 폴리에틸렌 및 (b) 상기 (a)를 사용하여 제조된 변성 폴리에틸렌으로 구성된다. In addition, the sheath in the resin composition for composite spun fiber according to the present invention is composed of (a) a high density polyethylene and (b) a modified polyethylene prepared using the above (a).
상기 (a) 고밀도 폴리에틸렌은 밀도가 0.955g/㎤ 이상인 에틸렌 단독 중합체 또는 에틸렌을 주성분으로 하는 알파올레핀 공중합체로, 시스성분의 전체 함량에 대하여 90~99 중량부로 함유한다. The high density polyethylene (a) is an ethylene homopolymer having a density of at least 0.955 g / cm 3 or an alpha olefin copolymer containing ethylene as a main component, and is contained in an amount of 90 to 99 parts by weight based on the total content of the cis component.
상기 (b) 변성 폴리에틸렌은 상기 (a)성분과 무수화물을 첨가하여 제조된 것으로, 0.1~0.7 wt%의 그라프트율을 나타내고 시스성분의 전체 함량에 대하여 1~10중량부로 함유한다. 상기 무수화물은 무수말레인산(Maleic Anhydride;MAH)이다. The (b) modified polyethylene is prepared by adding the (a) component and anhydride, and exhibits a graft ratio of 0.1 to 0.7 wt% and contains 1 to 10 parts by weight based on the total content of the cis component. The anhydride is maleic anhydride (MAH).
상기 (a) 및 (b)로 구성된 시스성분은 용융지수(190℃, 2.16㎏)가 15~30g/10분이다. The sheath component composed of (a) and (b) has a melt index (190 ° C., 2.16 kg) of 15 to 30 g / 10 minutes.
본 발명의 복합방사 섬유용 수지조성물에서 상기 시스성분과 코어성분의 비율은 중량비로 40:60 이다. In the resin composition for composite spun fiber of the present invention, the ratio of the sheath component and the core component is 40:60 by weight.
이하, 실시예 및 비교예를 들어 본 발명을 보다 상세히 설명하지만, 본 발명이 이들 예로만 한정되는 것은 아니다. Hereinafter, although an Example and a comparative example are given and this invention is demonstrated in detail, this invention is not limited only to these examples.
하기 실시예 및 비교예에서 제조된 조성물의 물성은 하기의 방법으로 측정하였다. Physical properties of the compositions prepared in the following Examples and Comparative Examples were measured by the following method.
(1) 용융지수는 ASTM D-1238법으로 190℃에서 측정하였다. (1) Melt index was measured at 190 ° C by ASTM D-1238.
(2) 방사 성형성은 선속 500m/min, 방사 노즐수 45개에서 시간 당 발생되는 단사 발생 수로 평가하였다.(2) The spin formability was evaluated by the number of single yarns generated per hour at the speed of 500 m / min and the number of spin nozzles.
<◎ : 매우 우수(단사 수 0~1건), ○ : 우수(2~3건), △ : 보통(3~5건), × : 불량(5건 이상)><◎: Very good (number of single yarns 0-1), ○: Excellent (2-3 cases), △: Normal (3-5 cases), ×: Bad (more than 5 cases)>
(3) 부직포 강도는 JIS L 1085(부직포 심지에 대한 시험)에 따라 측정하였 다. (3) Nonwoven fabric strength was measured according to JIS L 1085 (test for nonwoven fabric wick).
[실시예 1]Example 1
코어성분으로는 폴리에틸렌테레프탈레이트(고유점도 0.7)로 구성되고, 시스성분으로는 (a) 용융지수(190℃,2.16㎏) 20.0g/min이고, 밀도가 0.960g/㎤인 고밀도 폴리에틸렌 수지 95 중량부에, (b) 상기 (a)와 무수화합물을 첨가하여 제조된 변성 폴리에틸렌 수지(그라프트율 0.3wt%) 5중량부를 L/D가 32이고 직경이 40mm인 이축 압출기로 190~220℃에서 압출하여 펠렛상의 조성물을 얻어 구성하여, 시스층과 코어층를 중량비로 40:60이고 섬도가 3데니어인 복합방사 섬유를 형성하였다. 이때, 성형성을 평가하고, 상기 복합방사 섬유를 50㎜ 단위의 스테이플로 절단한 후, 카드기를 통과시켜 웹을 형성한 다음 엠보롤을 사용하여 부직포를 제조하였다. 다음, 물성을 측정하여 그 결과를 하기 표 1에 나타내었다.The core component is composed of polyethylene terephthalate (intrinsic viscosity 0.7), and the sheath component (a) has a melt index (190 ° C, 2.16 kg) of 20.0 g / min and a density of 0.960 g / cm 3 95 weight of a high density polyethylene resin (B) 5 parts by weight of a modified polyethylene resin (graft rate: 0.3 wt%) prepared by adding (a) and anhydrous compound to the part, extruded at 190-220 ° C. with a twin screw extruder having a L / D of 32 and a diameter of 40 mm. The pellet-like composition was obtained and formed to form a composite spun fiber having a sheath layer and a core layer in a weight ratio of 40:60 and a fineness of 3 denier. At this time, the moldability was evaluated, and the composite spun fiber was cut into staples of 50 mm, a web was passed through a carding machine, and then a nonwoven fabric was manufactured using embossing rolls. Next, the physical properties were measured and the results are shown in Table 1 below.
[실시예 2]Example 2
상기 실시예 1에서 시스 성분을 (a) 90 중량부, (b) 10중량부로 변경한 것을 제외하고는, 상기 실시예 1과 동일한 방법으로 제조하여 물성측정을 하였다. Except for changing the sheath component (a) 90 parts by weight, (b) 10 parts by weight in Example 1, was prepared in the same manner as in Example 1 to measure the physical properties.
[실시예 3]Example 3
상기 실시예 1에서 시스 성분을 (a) 90 중량부, (c)성분을 (a)로부터 제조된 변성 폴리에틸렌 수지(그라프트율 0.5wt%) 10중량부로 변경한 것을 제외하고는, 상기 실시예 1과 동일한 방법으로 제조하여 물성측정을 하였다. Except for changing the cis component in Example 1 (a) 90 parts by weight, and (c) component to 10 parts by weight of the modified polyethylene resin (graft rate 0.5wt%) prepared from (a), and It was prepared in the same manner to measure the physical properties.
[비교예 1]Comparative Example 1
상기 실시예 1에서 시스 성분을 (a) 단독으로 하고, 코어성분은 폴리에틸렌테레프탈레이트(고유점도 0.7)로 하여 시스층과 코어층의 무게 비율이 40:60이고 섬도가 2데니어인 복합 섬유를 성형하였다. 이때, 성형성을 평가하고, 부직포를 제조한 후 물성을 측정하여 그 결과를 하기 표 1에 나타내었다.In Example 1, the sheath component was used as (a) alone, and the core component was made of polyethylene terephthalate (intrinsic viscosity of 0.7) to form a composite fiber having a weight ratio of 40:60 and 2 deniers of the sheath layer and the core layer. It was. At this time, the moldability was evaluated, and after preparing the nonwoven fabric, the physical properties were measured, and the results are shown in Table 1 below.
[비교예 2] Comparative Example 2
상기 실시예 1에서 시스 성분을 (a) 85 중량부, (b) 15중량부로 변경한 것을 제외하고는 상기 실시예 1과 동일한 방법으로 실험하였다. Except for changing the sheath component in Example 1 (a) 85 parts by weight, (b) 15 parts by weight was tested in the same manner as in Example 1.
[비교예 3] Comparative Example 3
상기 실시예 1에서 시스 성분을 (a) 85 중량부, (c) 15중량부로 변경한 것을 제외하고는 상기 실시예 1과 동일한 방법으로 실험하였다. Except for changing the cis component in Example 1 (a) 85 parts by weight, (c) 15 parts by weight was tested in the same manner as in Example 1.
이상에서 설명한 바와 같이, 본 발명에 의한 코어-시스형 복합방사 섬유용 수지조성물에 있어서 시스성분을 고밀도 폴리에틸렌과 이를 사용하여 제조된 변성 폴리에틸렌으로 구성함으로써 우수한 방사성을 유지하면서 폴리에틸렌과 폴리에틸렌테레프탈레이트 사이의 상용성 문제를 해결하여 강도가 우수한 부직포를 제조할 수 있다. As described above, in the resin composition for the core-sheath composite spun fiber according to the present invention, the sheath component is composed of a high density polyethylene and a modified polyethylene prepared using the same. Solving the compatibility problem can be produced a non-woven fabric with excellent strength.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050116796A KR100639552B1 (en) | 2005-12-02 | 2005-12-02 | Resin Composition for Core-sheath Composite Spun Fiber |
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| KR1020050116796A KR100639552B1 (en) | 2005-12-02 | 2005-12-02 | Resin Composition for Core-sheath Composite Spun Fiber |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101229869B1 (en) | 2009-09-21 | 2013-02-05 | 웅진케미칼 주식회사 | Reinforced composite fiber for civil engineering and construction and preparing thereof |
| KR101283309B1 (en) | 2011-03-28 | 2013-07-09 | 주식회사 휴비스 | Core-Sheath Type Conjugate Yarn with Light Weight and Excellent Heat Insulation and Process of Preparing Same |
| KR101313004B1 (en) * | 2011-11-02 | 2013-10-01 | 자동차부품연구원 | Acoustic absorbent and headlining skin for vehicle using the same |
| KR101768323B1 (en) * | 2015-09-16 | 2017-08-16 | 롯데케미칼 주식회사 | Adhesive polypropylene resin composition for complex fiber spinning and preparing method of the same |
| CN111155237A (en) * | 2020-01-02 | 2020-05-15 | 东莞市亿茂滤材有限公司 | A composite spinning melt-blown nonwoven fabric with antibacterial function and its preparation method and application |
-
2005
- 2005-12-02 KR KR1020050116796A patent/KR100639552B1/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101229869B1 (en) | 2009-09-21 | 2013-02-05 | 웅진케미칼 주식회사 | Reinforced composite fiber for civil engineering and construction and preparing thereof |
| KR101283309B1 (en) | 2011-03-28 | 2013-07-09 | 주식회사 휴비스 | Core-Sheath Type Conjugate Yarn with Light Weight and Excellent Heat Insulation and Process of Preparing Same |
| KR101313004B1 (en) * | 2011-11-02 | 2013-10-01 | 자동차부품연구원 | Acoustic absorbent and headlining skin for vehicle using the same |
| KR101768323B1 (en) * | 2015-09-16 | 2017-08-16 | 롯데케미칼 주식회사 | Adhesive polypropylene resin composition for complex fiber spinning and preparing method of the same |
| CN111155237A (en) * | 2020-01-02 | 2020-05-15 | 东莞市亿茂滤材有限公司 | A composite spinning melt-blown nonwoven fabric with antibacterial function and its preparation method and application |
| CN111155237B (en) * | 2020-01-02 | 2021-07-13 | 东莞市亿茂滤材有限公司 | A composite spinning melt-blown nonwoven fabric with antibacterial function and its preparation method and application |
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